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Planet Earth
One day the Sun will die. One day the Sun will "eat" planet Earth and life on Earth will stop. Is that scary? Oh yes it is, but do not worry. The sun will shine the next five billion years before it becomes the "Death Star".
Nothing lasts forever, not even the sun. During the next five billion years the sun will continue shining and giving us energy and chance to live on our planet. After five billion years the sun has used all its "fuel". At this time several chemical reactions happen, causing that the outer layers of the sun start expanding. During few hundred million years the sun becomes a red giant that will "eat" Mercury and Venus. The new red giant can then be seen as far as 160 light years away.
The core of the Sun will activate again, which will blow out the gas layer by layer. A planetary nebula is created. In the middle of that planetary nebula is our old sun, which has now become a white dwarf. The new white dwarf will become cooler step by step until all chemical reactions stop. The sun has died.
The ftiture does not sound good. It is a bit dramatic and scary. Anyhow, we do not need to be afraid at all. When we think in which scale these phenomena happen, we realize that there is not need to worry at all. The universe was born 13.7 billion years ago and the sun will continue shining the next five billion years. Human being has measured the time only few thousand years, which is really nothing compared to
figures such as 5 billion years and 13.7 billion years. So, there is no need to be afraid of the future of the sun because the things happen during very very long time. Our life on Earth is not in danger when it comes to the sun, but the fact is that one day the sun will die, for sure. When that has happened, there is no life on Earth.
V. Retell the text.
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